2161130450423 has 24 divisors (see below), whose sum is σ = 2622690419328. Its totient is φ = 1744136314128.

The previous prime is 2161130450393. The next prime is 2161130450447. The reversal of 2161130450423 is 3240540311612.

It is a de Polignac number, because none of the positive numbers 2^k-2161130450423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2161130450423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161130450483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2211461 + ... + 3035262.

It is an arithmetic number, because the mean of its divisors is an integer number (109278767472).

Almost surely, 2^{2161130450423} is an apocalyptic number.

2161130450423 is a deficient number, since it is larger than the sum of its proper divisors (461559968905).

2161130450423 is a wasteful number, since it uses less digits than its factorization.

2161130450423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246931 (or 5246912 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 2161130450423 in words is "two trillion, one hundred sixty-one billion, one hundred thirty million, four hundred fifty thousand, four hundred twenty-three".